""ET INFO Observed DNS over HTTPS Domain in TLS SNI (doh-lb-de .dnsflex .com)""
SID: 2044544
Revision: 1
Class Type: misc-activity
Metadata: attack_target Client_Endpoint, created_at 2023_03_09, deployment Perimeter, signature_severity Informational, tag SSL_Malicious_Cert, updated_at 2023_03_09, reviewed_at 2024_08_28
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: 443
Flow: established,to_server
Contents:
-
Value: "|16|"
-
Value: "|01|"
-
Value: "|00 00 15|doh-lb-de.dnsflex.com"
Within: 8
PCRE:
Special Options:
- fast_pattern